WASHINGTON D.C., DC — U.S. President Donald Trump is set to embark on a groundbreaking second state visit to the U.K. from Sept. 17 to 19. King Charles II and Queen Camilla are scheduled to host him at Windsor Castle, Buckingham Palace announced on Monday.

According to the palace, Trump, a well-known advocate for the royal family, particularly the monarch, will be traveling with his wife, Melania Trump during this three-day visit.

No U.S. president has been invited for a second state visit. Trump previously enjoyed the pomp and pageantry of the state visit in 2019 during his first term when he was hosted by Charles’ late mother, Queen Elizabeth II.

The invitation for the second state visit from the king was hand-delivered by British Prime Minister Keir Starmer in February during a meeting at the White House.

After reading it, Trump said it was a “great, great honor” and appeared particularly pleased by the fact he will be staying at Windsor Castle, to the west of the capital. “That’s really something,” he said.

Precedent for second-term U.S. presidents who have already made a state visit is usually tea or lunch with the monarch at Windsor Castle, as was the case for George W. Bush and Barack Obama.

State visits are ceremonial meetings between heads of state that are used to honor friendly nations and sometimes smooth relations between rivals. While the king formally issues the invitation for a state visit, he does so on the advice of the elected government.

The visit is seen as part of Starmer’s effort to keep Trump close and lessen the impact of some of his polices on the U.K. The relationship between the two appears amicable, and has helped the U.K. from facing the sort of hefty U.S. tariffs that other nations are seeing.

But like Trump’s previous visit, it’s unlikely he will be welcomed by all. Last time, a day of protests saw the flying of a giant blimp depicting Trump as an angry orange baby from outside Parliament.

Lawmakers from Starmer’s Labour Party have also questioned whether the honor should be extended to Trump at a time that he is supporting Israel’s war in Gaza and threatening the sovereignty of allies such as Canada and Greenland.

Charles could also face some challenges during the visit because he is head of state of both the United Kingdom and Canada, which Trump has suggested should become the 51st U.S. state. During a speech to the Canadian parliament in May the king highlighted Canada’s “unique identity” and “sovereignty,” while echoing the words of the country’s national anthem when he said “The True North is indeed strong and free.”

State visits to Britain are particularly prized by heads of state because they come with a full complement of royal pomp and circumstance, including military reviews, carriage rides and a glittering state banquet hosted by the monarch.

The events normally take place in and around Buckingham Palace in central London. But like last week’s state visit from French President Emmanual Macron and his wife Brigitte, the Trumps will stay at Windsor Castle. Buckingham Palace is undergoing extensive remodeling.

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